<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <title>Tank Battle</title>
  <style>
    html,
    body {
      height: 100%;
    }

    body {
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0;
      background-color: #eee;
    }

    canvas {
      box-shadow: 7px 7px 7px 0 #bbb;
    }
  </style>
</head>

<body>
  <script src="js/maps.js"></script>
  <script src="js/tank.js"></script>
</body>

</html>